Electric lamp.



E. BEAUGOUDRAY & E. STOLTZ.

ELECTRIC LAMP.

APPLICATION FILED 0013,1910.

990,514. "Patented Apr.-25,;1,9l1.

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ELECTRIC LAMP.

APPLICATION FILED OCT. 3,1910. 990,514, Patented Apr. 25, 1911.

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EMILE BEAUCOUDRAY AND ERNEST STOLTZ, OF COVINGTON, LOUISIANA.

ELECTRIC LAMP.

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To all whom it may concern:

Be it known that we, EMILE BEAUCOU- DRAY and ERNEST S'roLTZ, citizens ofthe United States, residing at Covington, in the parish of St. Tammanyand State of Louisiana, have invented certain new and usefulImprovements in Electric Lamps, of which the following is aspecification, reference being had to the accompanying drawings.

This invention relates to improvements in electric lamps such as areused in bakery ovens, and especially with reference to the provision ofan electric switch mechanism for automatically turning on and off thecurrent from the lamp according to the direction in which the revolublelamp carrying element is turned, so as to avoid the necessity ofmanually operating a switch for turning the bakery light on and off, theinvention consisting in the construction, combination and arrangement ofdevices, hereinafter described and claimed.

In the accompanying drawings-Figure 1 is a perspective view of anelectric lamp such as are used in bakery ovens, provided with switchmechanism embodying our invention, and showing the lamp in unlightedposition. Fig. 2 is a sectional view of the same on the plane indicatedby the line aa of Fig. 1, and Fig. 3 is a vertical central sectionalview of the same. Fig. 4 is a detail perspective view of the block whichis attached to the movable element of the lamp.

For the purposes of this specification, we show in the accompanyingdrawings an electric lamp for use in a bakery oven, the hood or casing 1thereof being open on its outer side as at 2, and being provided in itssemicircular inner wall with an opening 3 which is presented to theinterior of the oven.

The revoluble member 4 of the lamp is cylindrical in form, disposed inthe casing or hood 1, and has a vertical shaft 5 the bearings for whichare in the upper and lower sides of the said hood or casing. Theincandescent electric lamp 6 of usual form is mounted in the saidrevoluble member 4, and on one side thereof is a reflector 7 which isopposite the opening 8 in the said revoluble member 4, which opening,when the member 4 is turned in one direction, registers with the opening3 of the hood or casing 1, so as to uncover the said opening 3, andpermit the light of the lamp to shine Specification of Letters Patent.

Application filed October 3, 1910.

Patented Apr. 25, 1911.

Serial No. 585,114.

therethrough, the rear wall 9 of the said member 4, when said member 4is turned in the reverse direction moving across and closing the saidopening 3, so as to cut off the light of the lamp. In other words, theopening 8 of the member 4 which uncovers the electric lamp, may bedisposed either opposite the opening 3 of the hood or casing 1, or inthe reverse position with reference thereto.

In accordance with our invention, we pro vide an electric switchmechanism which operates automatically to close the circuit includingthe electric lamp 6, when the men1- her 4 is turned in the reversedirection, so as to dispose its rear wall opposite the said opening 3.An insulating block 9 which is rectangular in form and is preferablymade of porcelain, is secured to one side wall of the casing 1, at apoint above the member 4. The inner end of the said insulating block iscut away on its outer side to provide a recess 10. The said block 9 isprovided with openings 11 through which the feed wires 12 extend, and isprovided with apair of contact arms 13 which are secured thereto bysuitable binding posts 14 to which the feed wires are connected. Thesaid contact arms extend longitudinally of the block 9, and are disposedpartly thereon and partly over the recess 10, the outer ends of the saidcontact arms being curved toward the block 9, and projecting across therecess 10. We also provide an insulating block 15 which is segmental inform and is provided at its lower end on its rounded side, with anoutstanding fiange 16. The said block 15' bears on the upper side of therevoluble member 4, and is secured thereto, by a suitable screw 17,which passes through the flange 16 and also through the top of themember 4, the said block 15 being secured on the member 4 with itscurved outer face concentric with said member 4, and its post near theperiphery thereof. On the said curved face of the block 15, is a pair ofcontact arms 18, each of which is secured thereto, at one end, by a bolt19, the said bolts being provided at their inner ends with attachingdevices 20-, to which the conducting wires of the lamp 6 areelectrically connected. The contact arms 13 of the fixed block 9 whichis secured to the hood or casing 1, incline downwardly, and the arms 18of the block 15, which are attached to and move with the revolublemember 4:, are disposed at such points thereon that when the member 4 isturned by means of its actuating rod 21, so as to dispose the opening 8opposite the opening 3, the contact arms 18 of the said block 15, engageand effect sliding contact with the curved ends of the arms 13 of theblock 9, so as to close the circuit in which the lamp 6 is included, andthereby cause the lamp to be lighted and to shine through the opening 8.Owing to the provision of the recess 10, in the block 9, and the springof the contact arms, the closing of the electric lamp circuit is assuredwhen the member 4 is turned in the required direction to dispose itsopening 8 opposite the opening 3. "When the member 4c is turned in thereverse direction by means of its actuating rod so as to dispose therear wall or side of the member a opposite the opening 3, the block 15moves away from the block 9 and the contact arms 18 become disconnectedfrom the contact arms 13, so as to break the circuit including theelectric lamp 6, and hence put out the light.

It will be understood from the foregoing description, that our improvedswitch devices operate automatically to cut in or cut out the lampaccording to the direction in which the revoluble lamp carrying memberis turned by its hand rod, so that the electric lamp is lighted and usedonly when it is necessary to look into the oven. Moreover, by means ofour improved switch devices, it is not necessary for the baker tooperate a switch when using the lamp, it being only necessary for him toturn the lamp into or out of lighting position.

We claim 1. An oven lamp comprising a fixed casing member, and arevoluble lamp carrying member mounted therein, in combination with aninsulating block attached to the fixed casing member, and provided withelectric contact arms, and an insulating block attached to the revolublelamp carrying member, and provided with contact arms movable by saidlamp carrying member into and out of engagement with the first mentionedcontact arms.

2. An insulating block for attachment to the fixed hood or casing of anoven electric lamp, and provided with a recess extending across thesame, and electric contact arms extending across the said recess, incombination with a segmental insulating block for attachment to therevoluble member of the electric oven lamp, the said segmentalinsulating block being provided on its curved surface with electriccontact arms, movable by the movement of the said revoluble element,into and out of engagement with the contact arms of the first mentionedblock.

In testimony whereof we hereunto attix our signatures in the presence oftwo Witnesses.

EMILE BEAUCOUDRAY. ERNEST STOLTZ. WVitnesses:

FRED J. Human, Jr., G. F. STRAIN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

